Fixed an issue with registry scan, minor UI changes.

The registry scan function exited early if no Java Development Key was found. This has been corrected by redoing the exit checks.
Social media buttons now lose focus after they are clicked to prevent a sticky appearance.
Changed the load spinner to have the text rotate within the center image.

app/assets/css/launcher.css

@@ -2122,7 +2122,7 @@ p {
 /* Stationary image for the spinner. */
 #loadCenterImage {
     position: absolute;
-    width: 200px;
+    width: 277px;
     height: auto;
 }
 
@@ -2130,6 +2130,7 @@ p {
 #loadSpinnerImage {
     width: 280px;
     height: auto;
+    z-index: 400;
 }
 
 /* Rotating animation for the spinner. */